pci-6251 analog input set up

[dphan128]

Hi all,

Can I set the analog input of PCI-6251 in mix configuration (some in differential mode and some in single ended mode). Because in my set up the differential option is greyed out.

Thanks

dphan128

[GovBob · Accepted solution]

Yes you should be able to do that. You have 16 analog inputs. For differential you will use two of those per channel. See the DAQ M series user manual. You can program channels on an M Series device to acquire with different

ground references.To enable m

ultimode scanning in LabVIEW, use NI-DAQmx Create

Virtual Channel.vi of the NI-DAQmx API. You must use a new VI for

each channel or group of channels configured in a different input mode.

Remeber that for a differential that you would wire for example AI 0 to the + side and AI 8 to the - side. So now you can't use the AI 8 for single ended. AI 1 is related to AI 9 etc. up to AI 7, AI 16.

Hope this helps.